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( N oMode L) H. H. DAVIDSON.

JAR CLAMP. No. 372,897. Patented Nov. 8, 1887.

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UNITED STATES.

PATENT OFFICE.

HENRY H. DAVIDSON, or NORTHPORT, NEW YORK.

JAR-CLAMP.

SPECIFICATION forming part of Letters Patent No, 372,897, dated November 8, 1887.

' Application filed April 14, 1887. Serial No. 234,783. (No model.)

To all whom it may concern:

Be it known that 'I, HENRY H. DAvIDsoN, of Northport, in the county of Sufi'olk and State of New York, have invented a new and Improved Fruit-Jar'Oover Champ, of which the following is a full, clear, and exact description.

My invention relates to a clamp intended drawings, forming a part of this specification,

in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1' shows in side view my improved clamp as applied to use for holding the cover to a fruit-jar, thejar being shown only in part, and the cam-lever having its loosened position indicated in dotted'lines; and Fig. 2 is a plan view of thejar, its cover, and the clamp.

The cover-clamp is formed of two parts, an elastic wire, A, and a cam-lever, B. The wire A has a central laterally-ranging bend,,a, onto which the cam-lever Bis slipped during the process of shaping the wire by a series of bends, to give it the general form shown in the drawings. wardlybent end portions, a a, inbent lips or books a a are formed to engage the under sides of lugs O O, formed on the neck of the jar, and having inclined or cam-shaped lower faces, 0, and separated by inclined or diagonal grooves c',admitting the hooks a below the lugs, in the usual manner. The eccentric head b of the cam-lever is bored to fit nicely upon the clamp'wire.

It is obvious that when the cover Dis placed on the jar E, with the usual packing, F, interposed between the cover and a shoulder at the neck of the jar,the hook ends a? of the clamp- At the extremities of its downwire A may readily be slipped to place beneath the jar-lugs O O, and the wire will then be turned until its hooks are fairly tight on the lugs, and the cam-lever Bwill then be pressed down from the position shown in dotted lines in Fig. l of the drawings to the position shown in full lines, and its eccentric head will press upon the top of the cover to close it-tightly on the jar.

The inherent elasticity of the clamp wire A will assure a perfectly air-tight seal of the jar for any length of time, and the jar may be very quickly and easily opened by simply turning up the cam-lever and removing the clamp-wire. The under faces of the jar-lugs C may be serrated or ground, or otherwise roughened, to give a better hold to the clampwire hooks.

The construction of the clamp with a bent portion of the wire A, forming the fulcrumpivot of the cam-lever, is at once very simple, strong, inexpensive, and durable, and the device may be made of any required size to fit jars, cans, or packages used for holding preserved fruits, vegetables, or other edibles, or any other class of goods.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A cover-clamp consisting of a wire or bar adapted to grasp or fit upon the open end of a jar or package and provided with a transverse bend, aud a camlever fitted on said bend of the wire or bar, substantially as herein set' forth.

2. A cover-clamp consisting of a wire, A, having bent ends a, provided with hooks a and also formed with a transverse bend, a, and a camlever, B, fitted by its eccentric head upon the bend a, and adapted to clamp the cover against the resistance of the hooks, substantiall y as herein set forth.

' HENRY H. DAVIDSON. Witnesses:

NATHANIEL S. AOKERLY, EDWARD WooD. 

